Improvement in churns



W. ,RGBINSOM Churn.

Patented Oct. I 24, 1865.

y No. 50,631.

provements on the churn which were secured to vv"UNITED STA-TES PATENT fOFFIc-n.

WILLIAM ROBINSON, OF BELLEFON'IAINE, OHIO.

IMPROVEMENT IN CHURNS.

Specification forming part of Letters Patent No. 50,631, dated October 24, 1865.

To all whom it 'may concern:

Beit known that l, WILLIAM ROBINSON, of Bellefontaine,in the county of Logan and State ot' Ohio, have invented a new and Improved Ghurn; and I do hereby declare thatthe following isa i`ull,clear, and exact description thereof, reference being had to the accompanying drawings, making a part ot' this specitication, in which- Figure is a vertical central section through the new churn. Fig. 2 is a horizontal section through the same with the dashers removed. Fig. 3 is a top view ofthe churn with the cover removed. Figure 4 is a vertical section, showing a inode of applying a friction-wheel to operate the churn instead of spurred gearing.

Simifar letters of reference indicate corresponding parts in the several gures.

This invention relates to certain novel imme by Letters Patent No. 37,244, the object of which improvements is to give a rapid rotary motion to the hotly of the churn by means of a driving-wheel applied to the bottom of the same and acting' directly upon this bottom, as will be hereinafter described.

Another object of my invention is to provide for closing the upper end ot' the central tubular bearing by means of a hub to which the radial arms of the dashers are aflixed, said hub passing through the cover of the churn and being soappliedto the xed supporting-stem that it can be detached from this stem or attached thereto at pleasure without removing the cover or stopping the motion ot' the churn-box, as will be hereinafter described.

Another object of my invention is to apply aseries of radial arms and agatherer within the churn-box and upon tlie bottom thereof in such manner that they will rotate with said box and lnay be removed therefrom at pleasure, as will be hereinafter described.

To enable others skilled in the art to understand my invention, I will describe its construe tion and operation.

In the accompanying drawings A represents a three-legged stand, the upper ends of the legs of which are rigidly secured to a solid block in any suitable manner, from which blocks proceeds a vertical spindle, B, which should be of i sufficient length to project slightly from the cover of the churn-box G, when this box is mounted upon the stand A, as shown in Fig.

l. The cylindrical churn-box O has a central tube, C', projecting up from its bottom, and extending up such height as that its upper end shall not be below the milk when it is put into the churn. The upper extremity of this tube is slightly lbcveledv,and ts snugly into an annular recess, a, which is made in the lower end of a hub, D. This hub is of sufficient length to extend to the top ot' the spindle B when the churn-box C is in its place on the stand A,and it is secured to this spindle by means of a key, I), driven in at the top, as shown in Fig. l. In driving the key b into its place the hub l) will be forced down so as to fit over the tube C and prevent leakage at this point. The hub should not tit so tight upon the tube C as to cause the churn-box to wolk hard. v

Three radial arms, cc c, project from the hub D, and have attixed to their outer extremities vertical dashers d d d, which may be slotted as shown in Fig. 1. These dashers do not extend quite down to the bottom of the churn-box,but leave a space beneaththem for a series of ra= dial blades, e e e, which project from an annular collar, g, which is slipped over the tube C and brought down upon the bottom of the churn-box, as shown in Figs. l and 2. This collar is also provided with a paddle, h, which projects up from one ofthe blades e, and serves a very important office in gathering' the butter. A notch is made'on the inside ot' said collar, which allows it to pass beneath a stud, t', which projects from the tube G, and by giving the collar a slight turn the stud will confine it down upon the bottom of the churn-box, as shown in Fig. 2.

The radial blades e e e are employed for the purpose ofassistingin carryingthe milk around with the churn-box by offering a resistance to it. They assist in counteracting the effect of the dashers upon the milk, and cause a rapid agitation thereof. The bladeor paddle halso assists in carryingthe milk around with the churn-box and admits of this box being rotated very rapidly.

G represents a pinion spur-wheel, which is secured to the outside of the bottom ot'the box C and concentric with its axis.l This spur-wheel has acentral hole through itto receive the spindie A, as shown in Fig. 1, and it is mitered to receive the teeth of a larger bevel-spur Wheel, J, which is keyed on a horizontalshaft, J', that has a crank, 10,011 its outer end, as shown in the drawings, Fig. l. The shaft J has its bearings in a hanger, n, and a cross-bar, m, applied to the stand A.

Instead of employing bevel-spur wheels to rotate the churn-box, a friction-wheel may be used, as shown in Fig. 4, and in this case but one wheel will be required, as the periphery of this wheel will act directly upon the bottom surface of the churn-box. This wheel may be constructed With a groove in its periphery, and an india-rubber ring stretched over the wheel and allowed to contract and retain itself in said groove. In either case the churn-box will be held down to the driving-wheel by the fixed *hub D and its key, as above described.

The cover O2 ofthe churn has a hole through its center to receive the upper end of the hub D,and to allow this end to be exposed in order to get at the key b when it is desired to loosen the hub and its radial arms or to fix them.V

Having thus described my invention, what I claim as new, and desire to secure by Letter Patent, is-

1. The combination of a driving device applied to the bottom of the churn with a hub, D, and tube, Gf, substantially as described.

2. Extending the hub D and the upper end ofthe spindle B through the top of the churncover, in combination with the tube C', sub- WILLIAM ROBINSON.

Witnesses:

PHILANDER JoNEs, J. M. KELLY. 

